Massage chair



FIG. 1 is a bottom plan view of massage chair showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a top plan view thereof.

The ornamental design for a massage chair, as shown and described.